Inking attachment for printing-presses



(No Model.) 4 Sheets-Sheet 1.

T. G. SPENGE. INKING ATTACHMENT FOR PRINTING PRESSES No. 479,674.Patented J'u1y26, 1892.

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T. Gr. SPENCE. v INKING ATTACHMENT FOR PRINTING PRESSBS No. 479,674.Patented July 26,1892.

WITNESSES:

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.T. G. SPENO-E. INKING ATTACHMENT FOR PRINTING 'PRESSB No. 479, 74.Patented July 26, 189 2.

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(No Model.)

T. G. SPENUE. INKING ATTAGHMENT FOR PRINTING PRESSBS No. 479,674.Patented July 26, 1892.

wnuzsses: INVENTOR 1M CQQQAJ 7 Afibnusv UNITED STATES PATENT OFFICE.

THOMAS G. SPENOE, OF BROOKLYN, NEW YORK.

lNKlNG ATTACHMENT FOR PRlNTlNG-PRESSES.

SPECIFICATION forming part of Letters Patent No. 479,674, dated July 26,1892.

Application filed December 24, 1891. Serial No. 416,038. (No model.)

To all whom it may concern:

Be it known that I, THOMAS G. SPENCE, a citizen of the United States,residing at Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements in Inking Attachments forPrinting-Presses; and I do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon, which form "a part of this specification.

This invention relates to an improved inking attachment forprinting-presses, more particularly to the means for supplying ink forthe impression.

Its objectis to dispense with the usual inking-rollers and in theirplace substitute an inking-ribbon.

The invention consists in the construction hereinafter pointed out.

In the annexed drawings, Figure 1 represents a front view of the deviceattached to an ordinary printing-press on line 1 1, Fig. 2; Fig. 2, aside "iew; Fig. 3, an enlarged detail side view, partly in section, online 3 3, Fig. 1, looking in the direction of the arrows; Fig. 4, asimilar view on the line 4 4, Figs. 1 and 3; Figs. 5 and 6, viewsshowing the device applied to a job-press.

The letter A indicates any ordinary press having the type bed or framea. To the bedbearers a of this frame, by screws 1), are secured the sidestrips 0 of the ribbon-frame C. These strips 0 have at their tops andbottoms the ears 0 c projecting out sidewise, and the brackets f f,projecting out in front. In the ears 0 c are journaled vertical rollersE E, one at each side of the type-frame. On one end of each roller issecured a ratchet g,having the pawl-lever G, which is loose on the shaftof the rollers and has a pawl g, for engagement with the teeth of theratchet g. These pawl-levers G extend out across the press-frame, and attheir outer ends 9 have holes 9 In these holes are loosely held the endsh of rods H, the other ends h of which are hinged to the platen-frame.At the side the pawl-lever G is connected to the frame A by a spiralspring I, there being a space between the pawl-lever and this frame.

In the brackets ff, at the ends of the ribbon-frame sides 0 c, arejournaled transverse rods F F, having tighteners f f projecting inwardlytoward each other, such rods running parallel with the top and bottomrails c c of the ribbon-frame C. At one end these rods have crank ends ff which are connected together by a rod L. Secured to one rod-say thetop one F-is a finger l, which projects toward the platen K, on which isa lug is, Fig. 2, in line with this finger Z. Secured to the rod F,alongside of this finger, but projecting upwardly, is a stop-arm I, fromwhich a spiral spring Z extends to the top of the type-frame a. On onerollersay E-is wrapped an ink-ribbon M, and one end is connected to theroller E.

In use the pawl of the pawl-lever at the side of the frame in which theroller carrying the roll of the ribbon is located is removed from itsratchet, the pawl at the other ratchet being in engagement. The type isplaced in its frame back of the ribbon. The press is then operated asusual as the platen comes forward. The rod l-I slides through the hole gas indicated by dotted lines in Fig. 4.. Just before the paper on theplaten strikes the ribbon the lug k, coming in contact with the fingerZ, depresses the latter, turning the rod F, and through the rod L therod F also. This causes the tighteners f f to move inwardly, pressingthe margins of the ribbon against the top and bottom rails c c of theribbon-frame 0, thus drawing the ribbon M tightly on the type. After theimpression is made and the platen recedes the spring 1 retracts thetighteners from the ribbon. At the same time the rod H, pulling on thepawllever G, causes it to give the roller E a partial rotation byoperating on the ratchet g. This brings a new part of the ribbon on thetype. This continues until the ribbon is transferred from the roller Eto the roller E. WVhen this takes place, the pawl of'the working ratchetis removed therefrom and the pawl of the other ratchet put intoengagement therewith and the movement of the ribbon reversed.

In Figs. 5 and 6 the invention is shown applied to a job-press. On thegripper-frame M of the ordinary job-press there are attached two flatbars m and m. These bars have bearings n and n at the upper and lowerends. On bar m at points n and n are screwed tension-clamps 0. In thesehearings on and m are journaled rollers N N, one roller at upper end andone roller at lower end. The rollers N N are provided with ratchets Nlike those in Figs. 1 and 2. On the upper roller N a ribbon M is wound,as heretofore described in Figs. 1 and 2. The gripper-frame M is hingedat m to the platen O. From this frame M a shank p descends and has aroll 19' at the bottom, which engages the slot p in the cam P, securedto the press-frame. Hinged to the press-frame are the rods Q Q, whichpass through holes 0" r in the arms R R, which carry the pawls r r forengaging the ratchets N On each side of these arms there are adj ustablysecured on the rods Q Qthe balls q q. As the press starts, the platen 0turns on its shaft and the end of the platen on which gripper-frame M isfastened descends to the position shown by the dotted lines. The shank10 and cam-roll p descend in cam P and bars m and m press against theflat surface of the platen. The lower roller N, with its ratchetarm R,lowers in position of dotted lines (see Fig. 6) the end of theratchet-arm R nearest the bed S, Fig. 6, sliding on rod Q, which ishinged to frame of press, until the ball q is reached. This allows thepawl r to move on the ratchet-wheel B a few teeth at each impression,and at this instant the type in bed S strikes the ribbon M and theprinting is accomplished because the paper is lying on platen O beneaththe ribbon M. As the press opens in position of full lines the end ofratchet-arm R rises until it strikes the ball q and through the pawl andratchet causing the lower roller N to make a partial revolution, thuspresenting a new surface of ribbon for next printing, and this operationis repeated until the ribbon is transferred to the lower roller N, whenthe pawl r on lower roller is released and pawl r on upper roller is putin engagement and the ribbon wound back to upper roller N by the upperratchet. The rollers in both forms are provided with friction-clamps 0.As one roller is turned to wind thereon the ribbon and unwind it fromthe other roller the friction-clamp on the latter roller causes suchroller to have a steady rotation and prevents any jerking or unevenpulling of the ribbon.

Having thus" described my invention, what I claim is 1. The combinationof the type-bed, an attachable frame therefor, a roller at each side ofsaid frame, a ribbon attached to such rollers and extending across theframe,and means, such as described, for intermittently operating saidrollers, as set forth.

2. In a printing-press, the combination of the type-frame, the platen,the inking-ribbon extending across the frame between it and the platen,a roller at each end of the ribbon,

to which the ribbon is secured, a ratchet-andpawl mechanism for suchroller, and a rod extending therefrom and connected with the platen,whereby after each impression a portion of the ribbon is moved for thenext impression, as set forth.

3. In a printing-press, the combination of the type-frame, the platen,an inking-ribbon between them, rollers at the ends of such ribbon, andtighteners located at the loose opposite edges of such ribbon, as setforth.

In testimony whereof I alfix my signature in presence of two witnesses.

THOMAS G. SPENCE.

Witnesses:

W. V. H. HICKS, A. E. LAZZARO.

